/*
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.skatiger.jrove.spring.utils;

import javax.servlet.ServletContext;

import org.skatiger.jrove.ViewContext;
import org.springframework.context.ApplicationContext;
import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.context.support.WebApplicationContextUtils;

public abstract class JroveApplicationContextUtil {
    private JroveApplicationContextUtil() {
    }

    public static ApplicationContext findApplicationContext(
            ViewContext viewContext) {
        WebApplicationContext webApplicationContext = (WebApplicationContext) viewContext
                .getAttribute(JroveAwareRequestContext.WEB_APPLICATION_CONTEXT_ATTRIBUTE);
        if (webApplicationContext == null) {
            webApplicationContext = WebApplicationContextUtils
                    .getRequiredWebApplicationContext((ServletContext) viewContext
                            .getExternalContext().getContext());
        }

        return webApplicationContext;
    }
}
